Thirds to alexander david hardy and frederick g



(No Model.)

J. P. BROWNING. AUXILIARY LINK FOR BICYCLE DRIVE CHAINS.-

I No. 592,275. Patented Oct. 26,1897.

NITE STA E A NICE JOHN PEDDIE BROW-NING, OF BRANTFORD, CANADA, ASSIGNOR OF TIVO- THIRDS TO ALEXANDER DAVID HARDY AND FREDERICK G. FAVVKES, OF SAME PLACE.

AUXILIARY LINK FOR BICYCLE DRIVE CHAINS.

SPECIFICATION forming part of Letters Patent No. 592,275, dated'October 26, 1897. Application filed-November 12,1896. Serial No. 611,853. (No made.)

To all whom it may concern.- as it fits between the teeth of the sprocket- Be it known that I, JOHN PEDDIE BROWN- chain.

ING, manufacturers agent, residing at the D is a belt which extends through the outer city of Brantford, in the county of Brant, in ends Oand hasanutd secured on its threaded the Province of Ontario, Canada, have inend outside the one end 0, as shown. The 55 vented certain new and useful Improvements bolt D serves to bracethe outer ends 0 toin Auxiliary Links for Bicycle Drive-Chains, gether. As the pin fitting through the broken of which the following is a specification. portion of the solid link and the correspond- My invention relates to improvements in ing end of the double link-is encompassed by auxiliary links for bicycle drivechains; and the U-shaped portion or yoke of the auxiliary 60 the object of the invention is to design a link link, it will be seen that such auxiliary link which may be adopted, should the chain bewill serve to hold securely together the two come broken, to connect the broken links of double links connected tothe solid link the chain and thereby form a temporary link broken, and I find in practice that such aux- I 5 in order to enable the rider of the bicycle to iliary link is very effective for the purpose for 65 reach his destination and get the chain rewhich it is designed-Viz, to form a tempopaired at his leisure; and it consists, essenrary repair of the chain until the rider of the tially, of a peculiarly-formed yoke which is bicycle can reach his destination, when of connected together at the outer ends by a course he may have a new link inserted by suitable bar or other form of connection, the expert mechanics, and not have to walkgas 7o inner end of the said auxiliary link being deis now frequently the case where the chain signed to fit the inner side of the solid link, becomes broken on the road.

as hereinafter more particularly explained. The auxiliary link, of course, it will be un- Figure 1 is a perspective View of portion derstood, might form part of the equipment of a sprocket-chain, showing a break inthe of every bicyclist. 75

solid link where the pin of the double link In Fig. 2 I show the yoke C of the auxilpasses through it. Figs. 2, 3, and d are de-' iary link with a bar O pivoted between the tails of alternative forms of auxiliary links. jaws c at one outer end of the yoke. The Fig. 5 is a View of portion of a sprocket-chain other end of the bar O has a slot 0 formed in and two auxiliary links joined together in it, which is designed to fit overaspring-catch 80 order to connect the broken chain when the 0 formed at the outer end of the other side break is made in a double link. of the yoke of the auxiliary link. Instead of In the drawings like letters of reference inthe catch 0 a threaded stem might be prodicate corresponding parts in each figure. vided at the upper end of this portion of the A are the double links of the chain, and B link and fit in a corresponding hole in the bar 85 are the solid links, and a are the pins which 0 and be provided with a nut on the top of it. extend through the ends of the double links In Fig. 3 I show the yoke of the link conand the ends of the solid links to connect the nected together by a bar 0 having curved links of the chain together. The solid links gripping ends 0 which extend into recesses Y in most chains are formed concaved longitu- 0 made in the sides of the outer ends of the 0 dinally inside and outside, as indicated. U-shaped portionor yoke of the link.

0 is the U-shaped portion or yoke of the In Fig. 4 I show still another alternative auxiliary link, which is substantially broad form in which the connecting-bar for the ends U-shaped in form longitudinally and fits the of the U shaped portion or yoke of the auxil- 5 inner side and the ends of the link, as shown. iary link is formed in two parts O, which are 5 The outer free ends O of the U'shaped porpivoted in jaws c at the outer ends of the U- tion or yoke of the auxiliary link are prefershaped portion or yoke of the link. The cenably made thicker than the base of the link, ters of the bars are fitted together as shown which is made thin, so as to make practically and are connected by any suitable form of no difference in the total width of the link, screw or connection O In Fig. 5 I show two auxiliary links, which would require to be used should the double link of the chain become broken. The broken ends in this case, of course,would be wrenched off, and the ends of the bolts would have heads on them, one in the shape of a jaw 0 into which the fiat head a of the other bolt would extend and be hinged therein by a pin 0. This latter form will eifectually serve to join the broken chain where a double link has been broken.

Although I show three alternative forms, it will of course be understood that several equivalent or simple forms might be devised which might accomplish the object which I have in viewthat is, to form an auxiliary link which will effectually connect a broken chain temporarily when required.

\Vhat I claim as my invention is 1. An auxiliary link for sprocket-chains comprising a flat yoke having a convex central portion adapted to snugly fit the concave part of a solid link, and concave portions forming continuations of said convex portion each end portion of said link extending at right angles to said central portion, and means for detachably connecting said ends, substantially as described.

2. An auxiliary link comprising a thinned yoke having a central convex portion and coneave portions forming eontinuations thereof,

the end portions thereof extending substantially at right angles to said central portion and tapering from said concave portions outwardly toward their ends, and the detachable connection between said ends, substantially as described.

3. As auxiliarylinks forjoiningbroken and disconnected links in a bicycle-chain, two U- shaped yokes adapted to fit snugly around the inner sides and ends of the adjacent disconneeted links, a connecting device extending between the outer ends of each U-shaped yoke and a flexible connection between the auxiliary links as and for the purpose specified. v

4. Asauxiliarylinks forjoiningln'okenand disconnected links in a bicycle-chain, two U shaped yokes adapted to fit snugly around the inner sides and ends of the adjacent disconneeted links, bolts extending through the outer ends of the U shaped yokes, a jaw-head on the end of one bolt and a flat head on the end of the opposite bolt between the auxiliary links and a pin extending through the jaw-head and flat head to form a hinge as and for the purpose specified.

JOHN PEDDIE BROWNING.

Witnesses:

l3. lloYn, ll. DENNISON. 

